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E-TABM-740

ABSTRACT: Transcription profiling of PBMCs from slightly obese human males given diclofenac or a placebo to study modulation of inflammation

PROVIDER: E-TABM-740 | ExpressionAtlas | 2025-01-16

REPOSITORIES: ExpressionAtlas

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			Action	DRS
	E-TABM-740-analysis-methods.tsv	Tabular
	E-TABM-740-atlasExperimentSummary.Rdata	Rdata
	E-TABM-740-configuration.xml	Xml
	E-TABM-740-percentile-ranks.tsv	Tabular
	E-TABM-740.condensed-sdrf.tsv	Tabular

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Transcription profiling of PBMCs from slightly obese human males given diclofenac or a placebo to study modulation of inflammation

Project description:Mildly obese males received a diclofenac or placebo intervention to study modulation of inflammation.

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Project description:The gut microbiota has been implicated in obesity and cardiometabolic diseases, although evidence in humans is scarce. We investigated how gut microbiota manipulation by antibiotics (7-day administration of amoxicillin, vancomycin, or placebo) affects host metabolism in 57 obese, prediabetic men. Vancomycin, but not amoxicillin, decreased bacterial diversity and reduced Firmicutes involved in short-chain fatty acid and bile acid metabolism, concomitant with altered plasma and/or fecal metabolite concentrations. Adipose tissue gene expression of oxidative pathways was upregulated by antibiotics, whereas immune-related pathways were downregulated by vancomycin. Antibiotics did not affect tissue-specific insulin sensitivity, energy/substrate metabolism, postprandial hormones and metabolites, systemic inflammation, gut permeability, and adipocyte size. Importantly, energy harvest, adipocyte size, and whole-body insulin sensitivity were not altered at 8-week follow-up, despite a still considerably altered microbial composition, indicating that interference with adult microbiota by 7-day antibiotic treatment has no clinically relevant impact on metabolic health in obese humans. This randomized, placebo-controlled, double-blind study had a 3-armed parallel design. Overweight/obese participants were randomized to oral intake of amoxicillin, vancomycin or placebo for 7 consecutive days. After an overnight fast, subcutaneous adipose tissue biopsies were taken that were subjected to gene expression profiling by array.

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Project description:Transcription profiling by array of obese mice treated with Lira

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Differential blood biomarkers and PBMC transcriptome profiles in normal-weight and obese individuals

Project description:The aim of study was to investigate correlation bewteen peripheral blood mononuclear cell (PBMC) transcriptome profiles and plasma lipid profiles of Korean adult with varying BMI. In Korean, BMI cut-off points are 18.5~22.9 kg/m2 (normal range), M-bM-^IM-% 23 kg/m2 (overweight), M-bM-^IM-% 25 kg/m2 (obese), M-bM-^IM-% 30 kg/m2 (severely obese). Thus, the obese group was subdivided into mildly obese (BMI 25~27 kg/m2, OA) and highly obese (BMI 27~30 kg/m2, OB). This study indicates that lipid, glucose and inflammation metabolism-related gene expressions were altered according to cahnge of varing phenotype biomarkers such as BMI, plasma total-C, TG, FFA and HDL-C. Thus, blood biomarkers and PBMC gene expression profiles identified in this study may be useful as indicative biomarkers for obese susceptibility in Korean adult as well as response to various intervention for treating obesity. Total RNA of PBMCs was obtained from normal weight, obese person and mRNA expression was measured.

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The effects of fenofibrate and fish oil on gene expression in peripheral blood mononuclear cells, muscle, and adipose tissue from overweight and obese individuals [WAT]

Project description:The molecular effects of the non-selective dietary PPARalpha agonists n-3 LCPUFAs were compared side-by-side with those of the selective synthetic PPARalpha agonist fenofibrate on whole-genome gene expression in peripheral blood mononuclear cells (PBMCs), white adipose tissue (WAT), and muscle in overweight and obese subjects. Eleven overweight and obese subjects participated in a randomized, double-blind, placebo-controlled intervention trial and received in random order 3.7 g/d n-3 fatty acids (providing 1.7 g/d EPA and 1.2 g/d DHA), 200 mg fenofibrate or placebo treatment for 6 weeks separated by a wash-out period of at least 2-weeks. Fenofibrate changed 5 of the analysed 64 PPARalpha target genes in PBMC, 4 in muscle, and 2 in WAT, whereas fish oil changed 2 genes in WAT only. Both treatments changed 17 out of 25 similar pathways in PBMCs, related to xenobiotic metabolism, biosynthesis of steroids, lipid metabolism, transcription, proteasome function, Th1 immunity, propanoate metabolism and nucleotide metabolism. The majority (18 out of 25) of downregulated pathways in WAT were similarly changed in PBMCs after fish oil and related to lipid metabolism and amino acid metabolism. Fenofibrate and fish oil hardly affected pathways in muscle. In PBMCs, fenofibrate and fish oil only regulated 9 similar genes in metabolic syndrome-related pathways, which were IL25, TICAM1, PRDX2, PTGS1, AGK, FDPS, LDLR, TNNI3, LMAN1 and PTGS1. Overall, 6-weeks treatment with n-3 LCPUFAs and fenofibrate hardly affected PPARalpha target genes in overweight and obese subjects. Pathway analyses suggested that gene expression profiles in PBMCs can provide information about regulated metabolic processes by fish oil and fenofibrate in WAT, but not muscle. Expression of the individual genes, however, hardly overlapped between the tissues.

2025-02-01 | GSE27386 | GEO

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